#!/bin/bash

# Copyright (C) 2010 Karel Zak <kzak@redhat.com>

TS_TOPDIR="${0%/*}/../.."
TS_DESC="lock"

TS_OPTIONAL="yes"

. "$TS_TOPDIR"/functions.sh
ts_init "$*"

TESTPROG="$TS_HELPER_LIBMOUNT_LOCK"

[ -x $TESTPROG ] || ts_skip "test not compiled"

#
# Be careful with number of processes. Don't forget that there is time limit
# when the mount waits on the mtab lock. If you define too much processes some
# of them will fail with timeout.
#
# Note: the original version (< 2.13) of util-linux is completely useless for
# this test (maximum for this old version is NLOOPS=10 and NPROCESSES=5 (2-way
# 2GHz machine)). It has terrible performance due a bad timeouts implementation
# in lock_mtab().
#
NLOOPS=1000
NPROCESSES=50


> $TS_OUTPUT.debug
echo 0 > $TS_OUTPUT
SYNCTIME=$(( $(date +%s) + 5 ))

for id in $(seq 0 $(( $NPROCESSES - 1 ))); do
	ts_run $TESTPROG --lock --synctime $SYNCTIME $TS_OUTPUT $NLOOPS >> $TS_OUTPUT.debug 2>&1 &
done

wait

ts_finalize
